Gary McGraw interviews Greg Morrisett, the Allen B. Cutting Professor of Computer Science and associate dean for computer science and engineering at Harvard University. His current work is on applications of advanced type systems, model checkers, proof-carrying code, and inline reference monitors for building efficient and provably secure systems. He's also working on languages for sensor networks. Hear the full podcast of the interview at www.computer.org/security/podcasts/ or www.cigital.com/silverbullet/. The Web extra is the full transcript of the interview.